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Move cpuType configuration under vmOpts.qemu

Move cpuType configuration under vmOpts.qemu: a task in LegoFlow-SWE (Harbor dataset). The cpuType field in the Lima YAML configuration is currently a top‑level field, but it is specific to the QEMU VM driver. It should be moved to vmOpts.qemu.cpuType so that it is clear that the setting only…

The task

The `cpuType` field in the Lima YAML configuration is currently a top‑level field, but it is specific to the QEMU VM driver. It should be moved to `vmOpts.qemu.cpuType` so that it is clear that the setting only applies when using QEMU, and other VM drivers (VZ, WSL) do not process it.

Part of Lego-X/LegoFlow-SWE.